Solar knowledge base

What plan checkers actually look for.

Permitting, code and AHJ guides, with one new article every week drawn from thirteen years of submittals across all fifty states.

8 articles· New every Tuesday· Engineering since 2013

Why solar permits get rejected: the 15 redlines we see most

Fire access pathways, busbar math, rapid shutdown labeling, unsealed calculations. The rejection reasons repeat across jurisdictions — here is each one, what the reviewer is checking, and the sheet it gets cleared on.

Permitting·12 min read ·Updated Sept 2026

Nothing matches that. Try a different word or clear the filter.

Stop reading, start submitting

Send one job. Judge the set.

Start a work order